class Animal{
    private String name;
    private int age;
    public  String getName(){
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
}
 class Dog extends Animal{

 }
public class Example01 {
    public static void main(String[] args) {
        Dog dog = new Dog();
        dog.setName("牧羊犬");
        dog.setAge (3);
        System.out.println("名称："+dog.getName()+",年龄："+dog.getAge());
    }
}
